Larry Johnson sat out his second straight game last night against Milwaukee with back spasms but vowed he would be back for Thursday’s game in Minnesota.

LJ said he’s sure the discomfort is back spasms and blamed the recent injury more on his failure to do proper back stablization exercises than the four-games-in-five-nights grind the Knicks went through last week.

“Thursday, for sure,” Johnson said. “It’s just muscles. The reason I feel good now is because I do feel progress. If it’s been a couple of days and I didn’t see progress, it’s a bad sign.”

Johnson said he spoke to assistant coach of player development Greg Brittenham yesterday morning and they both agreed that the cause of the spasm attack could be due to a change in their workout schedule.

“We haven’t been doing the right things for my back, either,” said Johnson. “Since we’ve been feeling good, I haven’t done the back stabilization in a while. Greg and I talked about it this morning. We got away from our stabilization exercises. Yes, we did.”